Holder and sterilizer for dental burs.



H. J. FRIES.

HOLDER AND STERILIZER FOR DENTAL BURS.

APPLICATION I'ILIED JUNE 5, 1913.

Patehted July 21, 19m

2 SHEETS-SHEBT l.

H. J. FRIES.

HOLDER AND STERILIZER FOR DENTAL BURS.

APPLICATION IEILE'D JUNE 5, 191a.

1,1@4,65 Patented July 21, 1914b 2 SHEETS'SHEET 2.

g9 By 7 [MA/pom nowann JOHNSON rams, orseenrrrnn, wasnzmoron.

.HoLpnn -A1\T,D.:HTEBILEZERIQFGB,DENTAL BU-Its.

Specification of Letters Patent. Application filed June 5, 191's. Serial-No. w en.

Patented-July 21, 1914.

To all whom it'ma z concern:

Be it known that I, HOWARD J. FRIES, a citizen of the United States, and a resident of Seattle, in the county of King and State of W'ashington, have'invented an Improved .Holder and Sterilizer for Dental. Burs, of which the following is a specification. 7

My invention comprises two principal butintin'iately related parts, namely, a holder proper for burs ordrills kept in stock anda combined tray, or holder, and sterilizer for such burs or drills as the dentist may vrequire for immediate use. i

The detailsof construction, arrangement, and operation ofpartsaife as hereinafter described and illustrated in the accompanyin%'drawings, in which I *igure 'l'is'a perspective view of the complete apparatus inclosed' in-a removable glass case or cover. Fig. 2 is a longitudinal section on the line 2-20f Fig; 1. Fig. 2 is a vertical section on the line 2 "of Fig. 3. Fig. 3 is a vertical cross section (if-theapparatus. Fig. 4 is a sectional perspective of the apparatus, the front wall of'f'the' sterilizing-tank being removed. (Fig. his a perspective view of the lid or coverftor the sterilizing tank or compartment andj'wliich also serves as a litter 'forfthje tray or bur holder formingan attachment of such ta'nk.

The apparatus will ordinarily be provided witha :glass cover, or protecting case, a, as shown in Fig. 1, the same being open at thebottom and furnished at the top with a jknob y, serving as a handle for lifting the cover. The "holder '1 for burs or "drillscarrie'din stock is'box'like inform; and has a forwardly inclined"to'p l which is *providetl'with numerou'sfhuiriberedf holesifor the 1 reception of burs ardr'illsf Directly beneath, and ,paralllelllt such-inclined top 1; butseparate'd teeter: ""narro spaces, is a "tworpart plat-e which sei v es as a 'support' fofi the' di'ills whose butts rest thereon- 'as"slio nin FigJ'SL As will be understood if feifierenee -toFigs. 2 and 3, the portioii df the plate indicated by the numeral 311s spaccdfarther fromlthe. inclined" top "than tlre tbtlrerr portion-won half 3, Wlllch arrangement .isiforthe purpose of;-

supporting burs of different lengths. In any case, the upper ends .ofl;the burs project above the inclined top 1, as shown in Fig. 3. The sterilizing portion of the apparatus is located directly in front of the inclined top 1, the front portion "of the boxlike structure being there constructed as a narrow oblon tank, or compartment, 4, for holding sterilizing liquid. '{-'l-he1depth of the latter is indicated in 2. A supplementalholder for burs o'r drills forms an attachment of this tank, the same 'co'n'sis't-' ing' of a plate 5 having numerous "numbered holes forburs'o-r drills.

Directly beneath-the perforated -plitte r .imperforate plates 6 and 6*whih are arranged different distances from the bui holder 5, as in the case ofthe'mainl holder -1 before described. Thusy'this holder'whieh is used in the sterilizingtanlgis adapted tier receiving and supporting burs-0f difierent' lengths, as will be readily un'ders'toodby reference to Fig.2. The tank 4 is provided with a cover 7 shown detached in Fig.'5,the same having pendent end flangesBhaVing' holes '9. These pendent flangesare constructed of spring material and thusadapted 'to 'engage detachable spring catches 10 which are'attach'edto the ends'ofthe =supplemental bur-holder 5. I

'As shown'in Fig. 2, when'thelidor cover 7 is in the normal position, its flanges 8' engage pins 11 which-project inward from the upper ends of the spring catches 110. leis-thus apparent that,'by pulling on the handle 7 of the lid 7 the'bur holder5,with its attachments, may be raised out of the sterilizing =liquid to the "position indicated in Fig. 4; or it'may be'com pletely emoved- 9 from the sterilizing tank if desired. In Fig. 3, the holder5 isshown raised-pai tw ay to the top. When-completely raised, as shown in' Fig. 4 the inner-edge o'f the' platef5 abuts the l owe'redge of the 'incline' or main 95 holder 1 and the two plates ha'vin g holes correspondingly numbered, it" is apparent that burs' may be"iconveniently removed from one' to' the 1 other and placed in -their appropriate moles with scarcely any nan-1.1m

ity *of -*mistake.-

Elma-engage the upper edges of the ends of the tank and thus serve to supportthe holder so that the burs held therein are readily accessible for selection and use.

I will now further describe with a re-- quired detail the manner of using the apparatus. The stock holder 1 is provided'with holes which are divided into six groups or sections. These are numbered as required to indicate different classes of burs. Thus the numbers from a} to 7 are for what are called round burs, and the numbers from 33% to 40 are for inverted cone burs, while the 500 numbers are for cross-cut burs. All these numbers are in that portion of the in v cline l which is directly over the bur supporting plate 3, and which serves for reception of what are called straight hand-piece burs. holder 1 is similarly numbered, and serves for reception of what are called'right-angle liand-piece burs. When the holder 1 is filled, it has a complete stock of burs and the dentist can perceive at a glance every kind and size so that he can immediately select and remove any one without delay. The

holder is also a great convenience for the.

dentist in respect to ordering new burs, since he may instantly ascertain what burs he is short of and will thus not be in danger of overstocking. When the sterilizer cover is in the position shown in Fig. 2, its pendent flanges 8 being engaged with the spring catches 10, it is apparent that, by seizing the handle 7 8 and lifting slowly and steadily, the supplemental holder 5 with its attachments may be raised, as indicated in Fig. 3, until it reaches the position indicated in Fig. 4, when the shoulders 10- of the catches will snap over the top edge of the tank. The'dentist then selects and uses such burs or drills as his work requires. When the work is done or the burs are no longer required for use, the cover 7 is again applied and the holder 5 is lowered into the sterilizing liquid to the position shown in Fig. 2. In other words, when the dentist requires a sterilized bur, he has simply to lift the holder 5 and thus raise the burs out of the sterilizing solution.

In Practice, the holder 5 used in the sterilizing tank is provided with holes numbered the same as the upper or stock holder 1. If the dentist starts out with his holder 1 full of new burs and he desires to use one of them in operating on a patient, he takes out of the holder the bur he requires, say from N0. 1, and uses it. Then, upon finding that he requires a No. 35, he takes the first bur out of the hand-piece andputs it in No. 1 in the sterilizing holder 5 which, as will be understood, has been reviously raised to The right hand half of the inclined same time, the dentist puts No. 35 in the hand-piece for He thus continues un-- til he has used as many burs as he requires, constantlytaking them first from the upper or main-holder 1 andlacing them in the lower or sterilizing hol er 5. When he has finished his work, all the burs in the lower part 5 are lowered into the sterilizing solution and left there until the next patient comes in. Then they are raised and ready under the inclined plate parallel thereto, onesection being farther from said plate than the other, as described.

2. A sterilizer for dental implements, comprising a tank for the sterilizing liquid, a

bur-holding plate provided with numerous holes duly numbered to indicate different kinds and sizes of burs, a support for the latter arranged under said plate, and spring catches attached to the ends of the plate and adapted for automatic engagement with the top edge of the tank when the aforesaid plate is raised out of the solution, as described.

3. In a sterilizer for dental implements, a tank for holding the sterilizing liquid, a plate provided with numerous numbered erforations for reception of burs, the plate Being adapted to be raised and lowered in the tank, and spring catches applied to the ends of the plate, their upper free ends being provided with outwardly projecting shoulders adapted, when the plate IS'IaISBd, for automatic engagement with and Subsequent support of the plate in the pos tion required for access to the burs, as descr1bed.

4. The combination with a sterilizing tank and a perforated plate adapted for holding burs and provided with spring catches, of a lid or cover for the tank provided with pendent portions adapted for detachable engagement with such spring catches, as described.

HOWARD JOHNSON FRIES.

Witnesses:

M. J. WILLETI,

JOHN P. HARTMAN, 

